Aluminium electrolytic reduction cell linings

Details Aluminium electrolytic reduction cell linings Aluminium electrolytic reduction cell linings

C - Chemistry, Metallurgy

25

C

204/209

C25C 3/08 (2006.01)

Patent

CA 1228330

A B S T R A C T Aluminum Electrolytic Reduction Cell Linings The invention concerns cells for production of A1 by electrolysis of an alumina-containing electrolyte based on cruelty and having a lining based on alumina for containing the electrolyte. A layer containing an alkali or alkaline earth metal compound, e.g. sodium aluminate, is included in the lining, preferably around the 880°C isotherm when the cell is in operation. On penetration of the lining by the electrolyte, the compound dissolves in or reacts with the electrolyte so as to raise the solids and reduce or prevent further penetration.

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